ATE106900T1 - PRODUCTION OF CELLULOSIC ACETATE. - Google Patents

PRODUCTION OF CELLULOSIC ACETATE.

Info

Publication number
ATE106900T1
ATE106900T1 AT89308949T AT89308949T ATE106900T1 AT E106900 T1 ATE106900 T1 AT E106900T1 AT 89308949 T AT89308949 T AT 89308949T AT 89308949 T AT89308949 T AT 89308949T AT E106900 T1 ATE106900 T1 AT E106900T1
Authority
AT
Austria
Prior art keywords
cellulose
flock
acetate
pulp
drying gas
Prior art date
Application number
AT89308949T
Other languages
German (de)
Inventor
Richard Burley
Patrick Roche
Original Assignee
Courtaulds Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Courtaulds Plc filed Critical Courtaulds Plc
Application granted granted Critical
Publication of ATE106900T1 publication Critical patent/ATE106900T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/02—Rendering cellulose suitable for esterification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Paper (AREA)

Abstract

A process for making cellulose acetate from wood pulp takes wet wood pulp and instead of converting it into dry pulp sheet which is the usual feedstock for acetate, dries and mechanically separates the pulp into a cellulose flock using a pin mill through which a hot drying gas is passed. Deactivation of the cellulose is avoided by control of the drying gas exit temperature to 80 DEG C to 95 DEG C and of the moisture content of the cellulose flock to 4 to 15% by weight. The flock produced may be acetylated directly without any need for reactivation treatments additional to the normal activation with acetic acid.
AT89308949T 1988-09-06 1989-09-05 PRODUCTION OF CELLULOSIC ACETATE. ATE106900T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888820905A GB8820905D0 (en) 1988-09-06 1988-09-06 Production of cellulose acetate

Publications (1)

Publication Number Publication Date
ATE106900T1 true ATE106900T1 (en) 1994-06-15

Family

ID=10643150

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89308949T ATE106900T1 (en) 1988-09-06 1989-09-05 PRODUCTION OF CELLULOSIC ACETATE.

Country Status (11)

Country Link
US (1) US5114535A (en)
EP (1) EP0359458B1 (en)
JP (1) JP2769204B2 (en)
AT (1) ATE106900T1 (en)
CA (1) CA1326236C (en)
DE (1) DE68915910T2 (en)
FI (1) FI894195L (en)
GB (1) GB8820905D0 (en)
NO (1) NO893441L (en)
PT (1) PT91635A (en)
ZA (1) ZA896560B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030413A1 (en) * 1995-03-31 1996-10-03 Daicel Chemical Industries, Ltd. Cellulose acetate having high moldability and process for preparing the same
EP0769500B1 (en) * 1995-03-31 2003-02-19 Daicel Chemical Industries, Ltd. Cellulose acetate having excellent physical strength and process for preparing the same
JP3942669B2 (en) * 1995-03-31 2007-07-11 ダイセル化学工業株式会社 Cellulose acetate with excellent physical strength and method for producing the same
CN1075513C (en) * 1999-09-08 2001-11-28 中国科学院广州化学研究所 Process for preparing acetyl cellulose by gas-solid reaction
RU2223971C1 (en) * 2002-09-05 2004-02-20 Тимофеева Галина Николаевна Cellulose acetate manufacture process
US20070184196A1 (en) * 2006-02-03 2007-08-09 Ben Wallace Electromagnetic irradiation vacuum drying of solvents
EP2134820B1 (en) * 2007-03-07 2011-09-21 DSM IP Assets B.V. Process for drying and purifying a particulate cellulose/plastic waste mixture
WO2009134406A1 (en) * 2008-04-30 2009-11-05 Marvin Lumber And Cedar Company D/B/A Marvin Windows And Doors Method and apparatus for steam heating with drying of solvents
US8920520B2 (en) 2012-03-01 2014-12-30 Celanese Acetate Llc Methods of preparing polysaccharide sheets for esterification
US20140182612A1 (en) * 2012-12-28 2014-07-03 Shenzhen Smoore Technology Limited Electronic atomizing inhalation device
BR112017008366A2 (en) * 2014-10-31 2018-02-20 Dow Global Technologies Llc efficient process for preparing an ester from a cellulose ether

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851008A (en) * 1927-04-28 1932-03-29 Eastern Mfg Company Preparation of alpha cellulose pulp by attrition
GB343712A (en) * 1930-01-31 1931-02-26 Louis Clement Improvements in or relating to processes for the production of organic acid esters of cellulose
US2008021A (en) * 1932-03-29 1935-07-16 Cellovis Inc Drying and converting cellulose into derivatives thereof
US2054301A (en) * 1935-04-17 1936-09-15 Brown Co Production of pulverulent cellulose
US2105498A (en) * 1936-06-27 1938-01-18 Rainier Pulp & Paper Company Acetylation of wood pulp
US2393783A (en) * 1943-08-24 1946-01-29 Eastman Kodak Co Preparation of chemical cellulose for esterification
US2478396A (en) * 1945-06-27 1949-08-09 Eastman Kodak Co Activation of cellulose for acylation
US2603637A (en) * 1950-05-18 1952-07-15 Celanese Corp Preparation of organic acid esters of cellulose
GB714163A (en) * 1950-05-18 1954-08-25 Celanese Corp Improvements in or relating to the preparation of organic acid esters of cellulose
GB888845A (en) * 1958-05-19 1962-02-07 Courtaulds Ltd Improvements in or relating to the preparation of wood pulp
JPS59191765A (en) * 1983-04-15 1984-10-30 Toyo Ink Mfg Co Ltd Pigment composition, production thereof and pigmented resin composition
GB8816864D0 (en) * 1988-07-15 1988-08-17 Courtaulds Plc Treating cellulosic sheet material

Also Published As

Publication number Publication date
EP0359458B1 (en) 1994-06-08
JP2769204B2 (en) 1998-06-25
PT91635A (en) 1990-03-30
US5114535A (en) 1992-05-19
DE68915910D1 (en) 1994-07-14
CA1326236C (en) 1994-01-18
FI894195A7 (en) 1990-03-07
GB8820905D0 (en) 1988-10-05
EP0359458A1 (en) 1990-03-21
ZA896560B (en) 1990-09-26
NO893441L (en) 1990-03-07
JPH02229801A (en) 1990-09-12
FI894195A0 (en) 1989-09-06
NO893441D0 (en) 1989-08-28
DE68915910T2 (en) 1994-11-10
FI894195L (en) 1990-03-07

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties